Capstan



(No Model.) I 2 Sheets-Sheet 1. S. MONTGOMERY.

. GAPSTAN.

No. 346,822. Patented Aug. 3, 1886.

W x II| VIE! INVENTOR J ATTORNEYS.

WITNESSES (N0 Model.) 2 Sheets-Sheet 2.

s. MONTGOMERY. GAPSTAN.

No. 346,822. Patented Aug. 3, 1886.

WITNESSES: J INVENTOR: I 7 BY Mm ATTORNEYS.

N. PETERSv Phelwmhu m ncn washin wn. n. c.

UNITED STATES FATENT Fries;

SAMUEL MONTGOMERY, OF \VEST TOLEDO, OHIO.

CAPSTAN.

, SPECIFICATION forming part of Letters Patent No.346,822, dated August 3, 1886.

Application filed llfllfcll 6, 1886. Serial No. 194.2Tl. (No model.)

T0 aZZ whom, it may concern.-

Be it known that I, SAMUEL MONTGOMERY, of NVest Toledo, in the county of Lucas and State of Ohio, have invented a new and Improved Oapstan, of which the following is a full, clear, and exact description.

My invention relates to capstans adapted for operating a draft-chain for hauling a ditching machine or heavy timber, or pulling stumps in clearing land, or for analagous uses, and has for its object to provide an inexpensive, durable, and effective machine of this character.

The invention consists in certain novel features of construction and combinations of parts of the capstan, all as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of the capstan mounted npon wheeled trucks and partly broken away. Fig. 2 is a plan view of the capstan wit-h the power-sweep removed and parts broken away and in section. Fig. 3

vis a cross sectional elevation of the capstan,

taken on the line a; as, Fig. 2, and drawn to a larger scale; and Fig. 4 is a sectional plan view of the parts shown in Fig. 3, drawn to the same scale.

The main base-frame A of the capstan consists of two side sills, a a, bolted at their forwards ends to an interposed narrow block, a, from which the side sills diverge re'arwardly, and about at the center of the base-frame these sills are bolted to the heavy bottom cross bar or timber, b, of an upright frame, B, the opposite side posts, I), of which rise at the inner face of the sills a a, and are bolted thereto, and are connected at their. tops by an upper cross-bar, b".

The space or recess a immediately behind the front block, a, and between the side sills, a a, gives room for the passage of a stout post, 0, into a hole dug or bored into the ground, whereupon aheavy latch-bar, D, hinged by strong strap-hinges d to the top bar, If, of the frame B, will'be swung down to rest on a standard, E, fixed to a cross-bar, e, fastened to the frame A, and a notch, 42, made at the outer chored securely to place while the draft-chain I is being hauled in, with its load, by the sweepchain wheels and chain, as presently described.

Brace-bars F F are bolted at f to the front ends of the side sills, -a a, of frame A, and thence extend to and over the top of frame B, to which the bars are bolted at and thence the bars extend rearward, and at their back ends are bolted to the top bar, 9, of a frame, G, the side posts or standards, 9 g, of which are vertically slotted at and are made fast to the rear ends of the side sills, a a, of frame A.

The boxes H H, in which the shaft I of the chain-drum J is journaled, are fitted in the slots 9 g of posts G G, and the hind wheels, K K, of the capstan are fitted on the reduced ends of the shaft I, which form axle-arms having neither pitch nor gather, and on which the wheels may revolve, and which may revolve in the hubs of the wheels when the shaft I is rotated, as the chain-drum J is operated from the gearing on the shaft of the sweep to wind the slack of the chain L on the drum as the chain is drawn inward by either of the chain-wheels M N, which are mounted on an upright shaft, 0, journaled in the C1OSS bZLIS b b of the frame B, and to the top of which shaft 0 the sweep P is connected. The metal plates 0 0, in which the shaft 0 is journaled, are fixed, respectively, to the top and bottom bars, I) b, of the frame B, and have flanges 0 lapping on the front edges of said bars I) b, which prevent overstraining of the bolts holding the plates 0 0 to the frame B, and make the whole strength of the frame cross-bars b 1) available in holding back against the pull of the capstan-chain.

The chain-wheels M N, which may be formed' together or in one piece, are loose on the shaft 0, on which is fitted, by a spline or feather, a clutch-head, It, which must rotate with the shaft, but may be slid on the shaft by a lever, It, fulcrumed to a cross-bar, a", of frame A, to engage teeth 1 on head R with clutch-teeth m on chain-wheel M, to cause the chain-wheels M N to revolve with the shaft 0 when the sweep P is turned either to the right or left hand, and when the clutch-head R is raised by the lever B the chain-wheels may freely revolve on the shaft as the chain is being payed out over one of them from the drum J to lie along the ground while the machine is being moved forward to another place, where it is to be anchored by the post 0, as above explained, to continue the hauling of the load hitched onto the outer end of the chain L.

The forward end of the capstan is shown supported on wheels K K, fitted loosely on the ends of an axle, K", through which passes freely a screw-bolt, 7., the lower end of which is formed as an eye or hook, 7;,fwhich engages the hooked upper end of a king-bolt, kflwhich passes loosely through the block a of the frame A. Above the axle K the bolt receives a nut, K", which may be turned one way to raise the forward end .of the frame A from the ground when the machine is to be moved forward, and by turning the nut K the other way the forward end of the frame Amay' be lowered to the ground when the capstan is to be anchored by the post 0 and latch-bar D. The back end of the frame A may be lowered to the ground by operating the sweep to lift the hind wheels, K K, as hereinafter described.

The drafttongue S has a pivotal connection at s with clips or lugs on the axle K.

Across the frame A, in rear of the chainwheels M N, there is fitted a shaft, T, which is jonrnaled at opposite ends in blocks t t, which are adapted to slide vertically between the opposite side flanges of yokes U, which each. have a top flange, a, through which passes freely a screw-bolt, t, which is fixed to the adjacentjournatblock t of shaft T, and receives a hat, 1?, above the flange a, and whereby the shaft T may be lowered or raised by adjusting the nuts t of the block-bolts t at opposite ends of the shaft. The yoke U also hasat its rear side a lug, a, which passes through the horizontal sloto in a metal frame or plate, V, which is bolted to the adjacent side sill a of frame'A, and the lug a has a screw-threaded aperture to fit a screw, XV, which is passed freely and horizontally through the frame V, and has fixed to it outside of the ends of the frame the collars ww, which prevent endwise movement of the screw and cause it, when turned, to move the yoke U either forward or backward for.

shifting the shaft T likewise. On the shaft T there is fitted by a key or feather a chainwheel, X, which thus must turn with the shaft and may slide laterally along the shaft, and about at the center of the shaft is fixed a pulley, Y, over which a crossed belt, y, passes to a pulley, Y, fast to the chain-drum J or its shaft 1, and on the shaftT also is fitted a chainwheel, Z, which may freely slip around and along the shaft T.

The chain L'is attached at one endof the drum J and passes thence forward to either one of the chain-wheels M N, to the smaller one, M, for a heavy slow pull on the chain, or

to the larger one, N, for a lighter quicker pull on the chain, and from the chain-wheel the chain passes rearward and along the ground to connect with the object to be moved by the capstan, which, for instance, may be a ditching-machine for cutting open or mole ditches,

or a stump to be pulled, or heavy timber to be hauled.

To utilize the power of the sweep for raising the back and heavier end-of the capstan from the ground to load it on the wheels, I have provided short chains 1 1, which are to be attached to the shaft 1 at 2 2, and at their other ends are to be fixed at 3 3 to the opposite silltimbers a a of the frame A, whereby when the sweep P is turned to the right hand the chain wheel M or N will draw on chain L and unwind it from the drum J, thereby turning shaftlto wind the chains 1 1 on it, and thereby lift the frame A as the slotted side posts, y, of rear frame, Gr, slip through the axle-boxes H, whereupon pins h may be passed through the posts 9 above the boxes H, to support the frame A on the wheels K K, and when the wheels are to be taken from the shaft Ifor oiling their hubs or the a learms on which they run short chains 4 4 may be connected at 5 6 at opposite ends to the shaft I, and the head-piece g of frame G,when the back end of frame A rests on the ground, and when the sweep I is turned to the right hand,the pins It being removed, the chains 4 4 will be wound on shalt I to lift it and raise the wheels from the ground, as will readily be understood, and as indicated in dotted lines in Fig.

' The operation is as follows: \Ve will suppose that the loose end of chain L has been fixed to a ditching-machine, and the capstanframe A is raised from the ground on the truck-wheels, and that the CltltCll-lOVQl. R is locked at its back end beneath a pin, a, fixed in the standard E, to disengage the clutch from the chain-wheels M N. N 0w, when the capstan is hauled ahead by a team hitched to the tongue S the chain will be payed out from the drum along the ground for quite its full length, or not, as desired, and when the team stops it will be unhitched from the tongue, and will be hitched to the sweep, and the capstan will be anchored by the post or stake G and latch-bar D after the frame A has been lowered to ground by operating the nut K and withdrawing the pins h from the frame G, the lever B being also operated to engage the clutch, and locked in this position by placing the lever over a pin, c, in the standard 1 as shown in Fig. 1. All now being ready, the sweep P will be turned to the left hand, and the chain L will be drawn inward by the chainwheel M or N, and the passage of the chain over the chain-wheel will turn the latter, and thereby turn the shaft T and pulley Y,

belt 1/ and pulley Y to turn the drum J, and

wind the hauled-in chain on the drum, the belt 3/ slipping a little on the pulleys Y Y should the drum J tend to wind the chain up faster than it is hauled in by the chain-wheel. The splining of the chain-wheel X to the shaft T allows slip of the wheel along the shaft to accommodate the passage of the chain,to it from either of the chain-wheels M N, or to accommodate the line of draft of the chain between the wheelX and the drum J. The loose wheel Z acts simply as a guide-sheave to lead the chain to the power-wheel M orN. The arrangement of the shaft T with the blocks t, yokes U, and srcews and nuts tt", provides for raising orlowering the shaft and its chain-wh eelsX Z,aecordingly as the draft-chain Lis set in the high or low chain-wheel M or N, and the screw and nut t nearest the chain-wheel X maybe operated to shift said wheel more or less to accommodate the bulk of the chain wound on the drum J as the hauling in of the chain progresses, and whereby provision is made for controllingthepressure of the wheel X on the moving chain L, so that wheel Xshall receive positive motion from the chain for winding the slack of the chain onto the drum by the aid of the belt and pulleys y Y Y. The provision for forward and backward movement of the shaft T and chain-wheels X Z by the frames V and screws XV allows the wheel X more especially to be set accurately to bring its chainbiting peripheral grooves and recesses into proper relation to thelinks ofthe chain L, and to maintain a proper tension between the chain-wheel M or N and said wheel X around whichever wheel,M or N, the chain may be passed. After the chain L has been moved up on the drum and the ditching-machine is hauled up as closely as desired to the capstan,

the latch-barD will be swung over backward,-

and the capstan-frame A will be raised, and the lever B operated to disengage the clutch at the chain-wheel M, and the capstan may then be drawn forward again as the chain L pays out from the drum ready for the next pull after the'capstau has been anchored to place.

It is not necessary to lower the capstanframe A to the ground when operating the sweep to haul in the chain L, as the wheels will support the frame during such time. Furthermore, the axles and wheels may be discarded, and the drum J then will be mounted on the frame A, which may be fitted with shoes or runners, allowing itto'be drawn along the ground; but by using the wheels, as described, the entire weight of the drum J and the chain L wound on it will be sustained by the hind axle, and the frameA will be relieved from the shocks to which it would otherwise be subjected when drawing the machine over rough roads to and from the place of use. p

The peculiar shape of the capstan-frame, made tapered toward its forward end, not only allows the machine to be turned in short curves, but, what is more important, it makes the whole strength of the main crosssills a a of the frame available in anchoring the capstan by the stake O and the latch-bar.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. A capstan made with a frame having a recess or notch, as at a to receive a groundpost, and a latch-bar adapted tobe set behind the'post to anchor the capstan, substantially as herein set forth.

2. A capstan made with a frame having side sills, a a, converging toward its front end and connected thereat to provide a space, as at a between them to receive a ground-post, and a latch-baradapted to be set behind the post to anchor the capstan, substantially as set forth.

3. A capstan made with a frame having a recess or notch, as 'at (R, to receive a groundpost, a latch-bar adapted to be set behind the post to anchor the capstan, a chain wheel or wheels mounted on a vertical shaft, a draftchain, a chain-receiving drum, a wheel driven by the draft-chain, and a belt and pulleys operated therefrom to. wind the slack of the hauled-in chain onto the drum, substantially as herein set forth.

4. A capstan made with a frame, chain- IOO chain, a sweep, P, on shaft 0, a drum, as at J,

receiving the d raft-chain from the chain-wheel, a shaft, T, journaled 011 frame A, so as to be vertically adjustable, a chain-wheel, X, and pulley Y on shaft T, a pulley, Y, on drum J or on its shaft, and a belt connecting the pul- I leys Y Y, substantially as and for the purposes herein set forth.

6. The combination, in a capstan, of a supporting-frame, a shaft, 0, journaled therein, chain-wheels M N, of different diameters, fitted loosely on said shaft, a clutch splined to the shaft and adapted to engage the chainwheels, a sweep, P, on shaft 0, a draft-chain, L, a drum, as at J, receiving the chain Lfrom wheel M or N, a shaft, T, journaled onframe A, so as to be adjustable vertically, aed also toward and from the wheels M N, a chainwheel, X, and pulley Y on shaft T, a pulley, Y, on drum Jor its shaft, and a belt connecting the pulleys Y Y, substantially as and for the purposes herein set forth.

7. The combination, in a capstan, of a sup porting-frame, a shaft, 0, journaled therein,

chain-wheels M N, loose on said shaft, a clutch on the shaft, adapted to engage the chainwheels, a draft-chain, L, a sweep, P, on shaft 0, a drum, as at J, receiving the draft-chain, a shaft, T, journaled on frame A, so as to be adjustable vertically and toward and from the wheels M N, a chain-wheel, X, and pulley Y on shaft T, a shaft, I, forming the axle to the hind wheels of the capstan, a drum, J, and pulley Y on shaft I, and a belt connecting the pulleys Y Y, substantially as and for the purposes set forth.

8. In a capstan, the combination, with a supporting-frame, a shaft, as at O, a draft chain, L, chain-wheels of different diameters on shaft 0, and a drum adapted to receive the draft-chain from either chain-wheel, of ashaft,

as at 'I, journaled on the frame and adapted for adjustment vertically,and also toward and from the chain-wheels, a chain-wheel, X, splined to shaft T, and with which the draftchain is adapted to engage, achain'receiving drum, J, and pulley and belt gearing connect ing shaft 1 with the chain drum'or its shaft, substantially as and for the purposes herein set forth.

9. In a capstan, the combination of a supporting-frame, a shaft, 0, journalcd thereon, chain-wheels M N on said shaft, a draftchain, L, a shaft, T, journaled on the frame and adapted for adjustment vertically and toward and from the chain -wheels, a chain-wheel, X, splined to shaft '1, a chain-guide wheel, Z, loose on said shaft, a chain-receiving drum, J, and pulley and belt gearing connecting the shaft'T'with the drum J or its shaft, substaned, substantially as and for the purposes here in set forth.

1-1. In a capstan, the combination, with the frames A and G, boxes H, fitted in frame G, a shaft, I, journaled in said boxes, and a chainreceiving drum, J, on'shaft I, of pins, as at h, adapted to frames G, substantially as herein set forth.

12. In a capstan, the combination, with the frames A G,boxes H,fitted in frames G,a shaft, I, journaled in said boxes, and a chain-receiving drum, J,'on shaft I, of short chains 1 4, adapted for connection to the shaft and to the frame A G, substantially as shown and described, whereby the-back end of the frame A and the hind wheels of the capstan may be lifted from the ground, as and forthe pur poses set forth.

13. A capstan comprising a frame, A B G, a shaft, 0, journaled therein, a sweep, 1, connected to shaft 0, chain-wheels on said shaft, a chain, L, adapted to said wheels, a chainreceiving drum, J, journaled in boxes H, adapted to slide vertically in the frame, pins 71, hind wheels, K K, on shaft I, a shaft, T, journaled in the frame, a chainwheel, X, thereon operated by the draftchain, pulley and belt connections from the shaft T to the chain-drum or its shaft, forward wheels, K K,

supported. on an axle, K a screw, 7.:, a kingbolt, It, in frame A, and a nut, K, on screw 7t", all substantially as and for the purposes herein set forth.

SAMUEL MONTGOMERY.

\Vitnesses:

HARRY L. A'rwELL, A. D. STEWART. 

